Global Patent Index - EP 1163067 A1

EP 1163067 A1 2001-12-19 - METAL CASTING

Title (en)

METAL CASTING

Title (de)

METALLGIESSEN

Title (fr)

FONTE DE METAL

Publication

EP 1163067 A1 (EN)

Application

EP 00906851 A

Priority

  • SG 0000012 W
  • SG 1999000057 A

Abstract (en)

[origin: WO0045980A1] Metal casting apparatus (10) comprises a tungsten inert gas (TIG) hand torch (12), a graphite crucible (14) and a graphite mould (16). Energised by a high frequency alternating current by supply (30), the torch (12) produces a pulsating arc within an inert gas shield (22). The arc melts metal (28) in the crucible (14), and cleaning of the molten metal is achieved by superimposing a positive DC bias on the alternating current. Different metals may be alloyed, with homogeneity resulting from agitation and stirring the molten metal. The molten metal is poured into mould (16) through conduit (24) by opening tap rod (26).

IPC 1-7 (main, further and additional classification)

B22D 41/015; B22D 41/62

IPC 8 full level (invention and additional information)

B22D 23/06 (2006.01)

CPC (invention and additional information)

B22D 23/06 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0045980 A1 20000810; AU 2840600 A 20000825; EP 1163067 A1 20011219; EP 1163067 A4 20030730; SG 87016 A1 20020319

INPADOC legal status


2005-03-09 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040826

2004-05-26 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040415

2003-07-30 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20030616

2003-07-30 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 22D 41/015 A

2003-07-30 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 22D 41/62 B

2003-07-30 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 22D 23/06 B

2003-07-30 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 22D 27/00 B

2001-12-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010811

2001-12-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-19 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI